Blowpipe for metal soldering



Manch 4, i924',

F. ROBINSQNy BLowPIPE Fon METAL .soLDERING Filed AprilI 30 A TTORNE Y.

liatented Mar. el, 1924i.

earner "www J, i" FREDERICK ROBINSON, OF N' W YORK, N. `Y.

Application filed April 30, 1923.

To @ZZ whom t may concern Be it known that I', FREDERICK RoBINsoN, a citizen of the United States, residing at New York city, in the county of New `tork and State of New York, have invented certain new and useful Improvements in Blowpipes for Metal Soldering, of which the following is a specification.

This invention relates to blow pipes for soldering work and more particularly to a novel and improved graduated gas and air tube wherein an effective flame is had for fusing metals requiring an extremely high degree of heat.

One of the objects of my invention is to provide a blow pipe wherein the gradually tapering air and gas tubes are so constructed at the burning tip to permit of a very high degree of heat when the controlling valve for the respective tubes are l,regulated and the proper mixture of air and gas is had to produce the required degree of heat at the burning tip.

Another object of my invention is to provide a blow pipe which is extremely simple in construction, highly eflicient in operation and use, practical, durable, capable of use in various arts and otherwise adapted to be manufactured at an extremely low cost whereby its commercial possibilities are greatly enhanced.

I accomplish the above objects and others which will be more readily understood when taken in connection with the accompanying drawings, showing a preferred embodiment of my invention and wherein,

Figure 1 is avertical section through the air and gas tube.

Figure 2 is a front view thereof, showing the tip of the blow pipe.

Figure 3 is a view taken substantially on the line 3 3 of Figure 1.

Referring now to the drawings, wherein like reference characters designate corresponding parts throughout the several views, 5 designates a flexible gas lead or pipe and 6 a similar flexible air pipe or lead, both of which are connected to any suitable supply. A valve casing or housing 7 is connected to the pipe 5 by a sleeve or coupling 8 and a second valve housing 9 is connected to the air supply pipe 6 by a similar but longer sleeve 10 as shown by Figure 1 of the drawing. The housings orcouplings 7, 9, respectively have connected thereto the gas lead 11 and the air lead 12, a spacing block :eLowrIrE-ros Marat sonnnanve. y'

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13 being provided adjacent the coupling 9 for spacing or separating the respective leads 11 and 12 referred to. A valve 14 and a valve 15 are provided for the respective housings or couplings 7, 9, whereby the operator may control the quantity of gas and air to the burner tip. It will be noted that the leads 11, 12, curve outwardly at the upper ends thereof toward the burner tip and that the inner wall converges to a common wall 16 at the curved portion of the leads. rIhe air lead 12 gradually tapers toward its end which is provided with a very restricted outlet 17 so that the air may be directed through the flame produced by the mixture .with the gas and thus project the hot liame to the metal. The outlet or mouth of the lead 11 is substantially triangular in shape as indicated at 18, see Figure 2, the widest portion of the outlet being in proximity to the restricted outlet 17 of the air lead. The triangular opening in the mouth of the gas lead extends somewhat forwardly as at 19 and is thus formed so as to produce a more eflicient mixture of the air and gas at the burner tip and by regulating the quantity of air and gas being introduced through the valve, the operator may regulate the blow pipe to give the required result by observing the color of the flame. A hook support 2O is also provided on the front of the blow pipe to permit the same to be suspended from any suitable support when not in use.

While I have illustarted and described my invention with some degree of particularity, I realize that in practice various alterations therein may be made. I therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by United States Letters Patent is 1. A blow pipe comprising an air and a gas lead, a gradually tapering outlet pipe and a valve housing connected to the air and gas leads respectively, said outlets having a common inner wall and curved at their ends. the air outlet terminating in a restricted opening and the gas outlet terminating in an enlarged triangular shaped opening disposed slightly beyond the restricted. opening.

2. A blow pipe comprising an air and e gas lead, a gradually tapering outlet pipe and a valve housing and valve therein connected to the leeds7 a spacer between the ontlet pipes, said outlet pipes having a commonv restricted opening and the ges outlet terminatingin 2L triangular shaped Opening disposed slightly beyond the restricted opening l@ of the air outlet.

In testimony' whereof I affix my signature.

FREDERICK ROBINSON. [11. 9.] 

